KR20150007336A - High capacity wireless communications systems and methods - Google Patents

Abstract

SUMMARY OF THE INVENTION A system and method for efficiently transmitting information over a wireless network segment is provided herein. The exemplary method 600 includes separating (605) digital front-hole data into general-purpose information and radio signal information via a transmitter, transmitting (620) general-purpose information over a wireless network segment from a transmitter to a receiver in a first communication channel, ; And transmitting (615) the wireless signal information over the wireless network segment from the transmitter to the receiver in the second communication channel.

Description

TECHNICAL FIELD [0001] The present invention relates to a high capacity wireless communication system and method,

The present invention can be generally described as providing an efficient method for transmitting data over a wireless network segment by separating digital front-hall data into radio signal information and general purpose information.

For example, if data is transmitted to a wired network such as a fiber-optic network, high-capacity and high-speed data transmission is possible. Coincidentally, wired networks can be limited in geographical reach. The wireless network enables data transmission to an area where the wired network is unavailable. In wireless networks, the bandwidth is limited, so it does not provide the data transmission capacity and speed currently provided by the wired network.

The present invention can be generally described as providing an efficient method for transmitting data over a wireless network segment by separating digital front-hall data into radio signal information and general purpose information.

In accordance with some embodiments, the present invention may relate to a method for efficiently transmitting information over a wireless network segment. The method comprises the steps of: (a) separating digital front-end hall data into general purpose information and radio signal information via a transmitter; (b) transmitting general purpose information over a wireless network segment from a transmitter to a receiver in a first communication channel; And (c) transmitting wireless signal information over a wireless network segment from a transmitter to a receiver in a second communication channel.

A system comprising a baseband unit (BBU) communicatively coupled to a radio frequency unit (RFU), wherein at least one BBU and RFU separate the digital front-hole data into general-purpose information and radio signal information, To transmit general purpose information over a wireless network segment and to transmit wireless signal information over a wireless network segment in a second communication channel.

According to some embodiments, the present invention provides a method comprising: (a) separating digital front-hall data into general purpose information and wireless signal information via a transmitter; (b) converting the radio signal information into a plurality of radio frequency carrier signals; And (c) digitally modulating general purpose information. ≪ RTI ID = 0.0 > [0002] < / RTI >

Are included in the scope of the present invention.

Certain embodiments of the invention are illustrated in the accompanying drawings. It is to be understood that the drawings are not necessarily to scale and that details not necessarily essential to the understanding of the invention or obscuring other details may be omitted. It is to be understood that the invention is not necessarily limited to the specific embodiments described herein.
1 is a schematic diagram of a base station configuration implementing a method for transmitting information in accordance with the present invention.
2 is a schematic diagram for transmitting information between two units of the base station of Fig.
3 is a schematic diagram for transmitting information between two units of the base station of Fig.
4 is a schematic diagram of information transmission according to the invention at the level of the transmitter;
5 is a schematic diagram of information transmission according to the invention at the level of the receiver;
6A and 6B are flow charts of an exemplary method of transmitting information.
Figure 7 illustrates an exemplary computing system that may be used to implement embodiments in accordance with the present invention.
Figure 8A illustrates an exemplary functional implementation of a front-hall module in accordance with the present invention.
Figure 8b shows another exemplary front hall module constructed in accordance with the present invention.

While the invention is susceptible of embodiment in many different forms, there is shown in the drawings and that certain specific embodiments detailed herein are to be considered as illustrative of the principles of the invention, and that the invention is not limited thereto Will not be construed as limiting the scope of the present invention.

It is to be understood that similar or similar components and / or components described herein may be identified in the drawings by similar reference characters. It will also be appreciated that some numerical values are merely schematic representations of the present invention. As such, some components may be distorted from their actual size for clarity of illustration.

Generally, the present invention provides for high capacity wireless communication between one or more baseband units ("BBUs") and one or more radio frequency units ("RFUs") within a wireless network assembly, such as a base station . The BBU and RFU are in digital communication with each other via a bi-directional transmission interface. Signals representing carrier data that can be transmitted and received by the antenna (s) associated with the base station (BS) are in a format known as " I / Q " meaning "in phase / in quadrature ≪ / RTI > Other information that does not indicate carrier data may also be communicated between the BBU and the RFU. These two types of information are usually multiplexed into digital front-hole data. In some instances, a system implemented in accordance with the methods described herein outputs carrier data that is directly I / Q coded as an RF carrier (i.e., in an analog format), although those skilled in the art understand that such a system may But will implement an internal interface that is digitally coded as I / Q quantized data before outputting the signal.

In more detail, the BBU and RFU may be communicatively coupled using standardized / approved open protocols (e.g., interfaces, proprietary protocols, or a combination thereof). In some embodiments, the protocol used between the BBU and RFU facilitates bi-directional transmission of digital front-hole data between the BBU and the RFU by either fiber optics or other wire-coupled type. In one embodiment, time-division multiplexing may include various types of information, such as general purpose information, including but not limited to control, instructions, synchronization and other data other than "I / Q ≪ / RTI > A wireless signal including carrier data, also referred to as "traffic data" or "I / Q data" may be transmitted and received by various antenna (s) associated with the base station.

Such a protocol may actually be fully digital, and its throughput may be in the range between approximately 600 megabits per second and 10 gigabits per second. The structure of such a protocol usually includes a set amount of words indicating general purpose information and a set amount of words indicating I / Q data. In some examples, the set amount of words representing general purpose information may be relatively less than the set amount of words representing I / Q data.

In general, in order to transmit both I / Q data and general purpose information, I / Q data (e.g., radio signal information) is transmitted in digital form as a whole. Digital streams and / or multiplexing can be processed by the system increasing the throughput. For example, a digital stream of approximately several tens of gigabits / second can be transmitted corresponding to I / Q data of wireless connection technology such as 3G / 4G, LTE "Long Term Evolution ", LTE-Advanced and the like.

Due to virtually unlimited capacity, a fiber optic medium can be used to transmit I / Q data. Another solution contemplates transmitting digital I / Q and / or general data using a wireless network. One solution is to consider the use of radio waves. This solution requires substantial throughput to transmit the entire structure (e.g., both I / Q and general purpose data), so substantial bandwidth utilization or sophisticated modulation may be required. This exemplary method is described in more detail in European Patent No. 1534027. Another solution considers the use of optical waves as shown in U.S. Patent Application Publication No. 2003-027597. All of these wireless systems offer a digital solution for connecting the BBU module to the RFU wirelessly, but such systems suffer from deficiencies that include, but are not limited to, the fact that the throughput of such systems (e.g., front holes) is substantial.

Advantageously, the present invention provides for the transmission of information using a wireless system in a manner that ensures the full transmission of I / Q data that evolves and grows steadily over time, substantially reducing the amount of throughput between the BBU and the RFU . These and other advantages of the present invention will be described in more detail below with reference to the drawings.

Referring now to Figure 1, Figure 1 illustrates an exemplary configuration for an actual embodiment of the present invention. Base station (BS) 1 is shown to include a baseband unit (BBU) 2 communicatively coupled to a core network (CN). The CN manages a combination of communication with a public telephony (PSTN) or data network. The BBU 2 may be communicatively coupled to the BBU Connection Unit 5 via any suitable path or channel that enables the transmission of digital data.

In addition, the BS 1 may comprise a series of radio frequency units, such as radio frequency units (RFU) 3a and 3b. There are two RFUs in this example. For example, the RFU 3a may be communicatively coupled to the RFU connection module 6a by a communication channel 9 that may enable analog or mixed analog and digital transmissions. In another example, the RFU 3b may be communicatively coupled to the RFU connection module 6b by a digital communication channel 22. [ In one embodiment, the RFU 3a may be communicatively coupled to the antenna 4a by a second communication path 10a, and the RFU 3b may be coupled to the antenna 4b by a second communication path 10b Can be communicably connected. The BBU connection module 5 communicates with all RFU connection modules 6a and 6b via a wireless communication channel 7a or 7b, which is also referred to as a "wireless network segment ".

1, 2, 4, and 5 collectively illustrate an exemplary system and method for transferring information using the system of FIG. According to some embodiments, the BBU 2 may be communicatively coupled with a core network (CN) in accordance with methods described herein above and known to those skilled in the art.

The BBU 2 communicates with at least one RFU 3a or 3b using a BBU connecting unit 5 that is communicatively connected via the digital communication channel 8 to the BBU 2. [ Although the BBU connecting unit 5 and the BBU 2 are shown as separate devices, in some examples the BBU connecting unit 5 and the BBU 2 may be integrated into the same device. In some embodiments, the digital protocol frame 80 may be transmitted between the BBU 2 and the RFU 3 via the BBU connecting unit 5 using the digital communication channel 8. The digital protocol frame 80 includes a series of words for two types of information: (a) a word corresponding to general purpose information; And (b) a word corresponding to "I / Q" radio signal information. Although this method considers the use of "words" to differentiate between the two basic types of information contained in the digital front-hall data, the system may be any other Can be configured to differentiate the information type using differentiators.

Generally, a method for transmitting information may include separating digital front-hole data including I / Q data and general-purpose data into two basic data types. In some examples, separating the digital front-hole data may include demultiplexing the digital front-end data by evaluating the digital protocol frame 80. [

Alternatively, the method for transmitting information may include separating the analog RF signal and the universal data and transmitting them to two different channels.

The digital protocol frame may be evaluated to subtract a word related to general purpose information from a word related to IQ radio signal information in each digital protocol frame 80.

Again, the data contained in the digital protocol frame 80 may be demultiplexed from the BBU connection module 5 to the demultiplexing module 51. The BBU connection module 5 can then transmit the demultiplexed information type over the wireless communication channel 7 using the antenna 50. [ More specifically, the digital protocol frame 80 may be separated into general purpose information and radio frequency information. The general purpose information can be extracted from the protocol frame 80 by the demultiplexing module 51 and passed as digitally modulated data by the digital modulator module 52. The radio frequency information may be further separated into information constituting a radio frequency carrier signal 71-74, also referred to as a carrier image, and thus modulated by the module 53 into radio frequency carriers 71-74.

The word about the general purpose information can be transmitted via the digital communication channel of the wireless communication channel 7 using digital modulation. Note that for an I / Q radio signal, the I / Q radio signal ultimately represents a carrier for transmission or reception by the antenna (s) 4 associated with the base station 1. The base station 1 may process the I / Q radio signal with the appropriate technology required by the radio access technology ("RAT") which enables communication between the mobile telephone and the antenna of the BS 1 .

Next, the BBU connection module 5 may be configured to separate the word for the I / Q radio signal into a series of radio frequency carriers. Information belonging to the I / Q radio signals contained in the digital protocol frame 80 is transmitted as radio frequency carriers 71, 72, 73 and 74 by the BBU connection module 5 via the radio communication channel 7.

The transmission of the I / Q radio signals used by the wireless communication channel 7 is carried out by one or more RFUs 3 for the carrier and similar RFUs 3 which are implemented by the corresponding RATs and are transmitted and received by the antennas 4, It will be appreciated that the invention may be based on wireless access technology. For example, the radio technology used to transmit the I / Q radio signals may improve the efficiency of data transmission over the wireless communication channel 7 over the various performance characteristics of the wireless medium. Such performance characteristics include, but are not limited to, line of sight propagation, point-to-point topology, and lower interference.

The words associated with the I / Q radio signals may be transmitted to a radio frequency carrier (e.g., a radio frequency carrier) using techniques known to those skilled in the art, such as filtering, digital up conversion ("DUC"), I / Q mixing, mixing, 71, 72, 73, 74).

Advantageously, since the integrity of the I / Q radio signal, the carrier "image" and the RAT transmitted and received by the antenna 4 is sufficiently managed for the overall performance of the wireless communication channel 7, The transmission of the / Q radio signal may be transparent at the throughput offered by the RAT of the operator of the BS 1. In some instances, transmitting an I / Q radio signal in the form of a radio frequency carrier may be achieved in a non-transparent manner.

In addition, the bandwidth required for the wireless communication channel 7 may be defined by the associated RAT (s) transmitted and received by the antenna 4 associated with the RFU 3.

As a net result, a series of radio frequency carriers 71, 72, 73, 74 for each digital protocol frame 80 may be transmitted over the wireless communication channel 7, and one or more digital modulation may be transmitted via the Universal Information Protocol May be used to transmit the component. Thereafter, a series of radio frequency carriers 71, 72, 73, 74 and digitally modulated transmission 75 are received by the RFU connection module 6 using the antenna 60.

Next, the RFU connecting unit 6b can perform a method of recombining the front-hall signal and data from the previously separated data (for example, I / Q radio signal and general-purpose information). An exemplary method for transmitting information may further comprise converting a series of radio frequency carriers 71, 72, 73, 74 into a series of words representing I / Q radio signal information. Again, techniques known to those skilled in the art, such as filtering, digital down conversion ("DDC"), I / Q mixing, mixing, digital / The digitally modulated transmission 75 may be used by the RFU 3b in accordance with a pre-established protocol.

More specifically, the method includes converting by a conversion unit 63 of a series of radio frequency carriers 71, 72, 73, 74 and demodulation into words representing general purpose information 61 of digitally modulated data . The series of words can be multiplexed by reordering the words to regenerate the digital protocol frame 220 corresponding to the previously demultiplexed digital protocol frame 80. The digital protocol frame 220 is then transmitted to the RFU 3b via the second communication channel 22. [ The second communication channel 22 may enable transmission of digital data and / or analog data.

In order to ensure proper reconfiguration of the digital protocol frame 220, the synchronization information is transmitted to the BBU connection module 220 so that general purpose information and I / Q radio signal information of the digital protocol frame 220 may be returned in a coherent form. (5) and the RFU connection module (6b).

The digital protocol that is typically used to transmit a transmission frame (80, after demultiplexing), a transmission frame (220, after multiplexing) takes into account the actual distance between the BBU and the RFU. Thus, such a protocol can tolerate a significant proportional delay in either a wireless link or a wired link. For example, a delay of 55 microseconds may be seen when 10 kilometer optical fibers are used, respectively. In addition, it is possible to temporarily store general purpose information or I / Q information in the buffer area in the RFU connection module 6b. This makes it possible to more coherently process all (or a substantial part of) information received by the RFU connection module 6b based on the synchronization information.

In yet another exemplary embodiment, information that is not useful to the digital protocol frame 80 to remove useless information is removed. For example, words that are filled or unused can be removed. Therefore, the amount of information transmitted in proportion to only the necessary information is transmitted can be reduced.

3 shows another exemplary embodiment in which the RFU connection module 6a and the RFU 3a form a wireless remote radio head (RRH). According to some embodiments, the RFU connection module 6a may communicate with the RFU carrier 71, 72, 73, 73, 72, 72, 72, 74 are retransmitted. According to some embodiments, the RFU connection module 6a may not multiplex the general purpose information word, and in some examples, the radio frequency carrier 71, 72, 73, 74 may be a word associated with the I / . ≪ / RTI > Thus, the digital protocol frame 220 described above may not be reconfigured by the RFU connection module 6b. Alternatively, the RFU connection module 6b may adjust the radio frequency carriers 71, 72, 73, 74 based on the associated RAT for transmission by the relay antenna 4b associated with the RFU 3b.

In some examples, the general purpose information may be processed by the RFU connection module 6 (e.g., instead of being sent to the third party using it to perform control or management tasks). In some instances, in addition to the first communication channel 9, which may include an analog communication link, there may be a separate control interface (e.g., an API) through which control and management processes may occur.

The term "processing" can be understood to include modification of the RF signal based on content control information included in general purpose information.

According to some embodiments, the BBU connection module 6a may be used to interpret and utilize general purpose information to perform various actions, such as actions performed by the RFU 3a, for example about the same type of information. Thus, it may no longer be necessary to send complete general purpose information to the RFU 3a, which may lead to a reduction of the amount of information from the digital protocol frame, and may enable more efficient data transmission.

It should be noted that, in an exemplary operation, the data may be transmitted to one of the RFUs 3 serving as a receiver in the BBU 2 serving as a transmitter. However, the data can likewise be transmitted to one of the RFUs 3, in this case serving as transmitters, to the BBU 2, which in this case acts as a receiver.

Advantageously, the invention can take into account the processing of radio frequency carriers in terms of bandwidth (MHz / bandwidth) rather than in terms of throughput (Mbit / s) over the radio communication channel 7. Again, the wireless communication channel 7 can communicatively couple the BBU 2 and a series of RFUs 3 of the BS 1. This configuration takes into account a digital solution that benefits from the modulation efficiency of the technology implemented in this wireless communication channel 7.

In addition, the spectral efficiency can be managed transparently with respect to the radio access technology used in the wireless communication channel 7. Further, the present invention can benefit from the inherent advantages of the line of sight / non-line of sight "LoS / NLoS" technique between a fixed station and a single user. In addition, this method makes it possible to use different frequency bands to transmit different signals according to the method described in EP 1895681.

In some instances, the present invention advantageously accommodates complementary diversity technologies that increase efficiency, such as multi-polarization, line-of-sight multi-input multiple-output "LoS MIMO ".

Although the method and system for transmitting the above-described information relates to the field of mobile telephony, the present invention is not limited to public mobile wireless networks ("PMRs") used by law enforcement and first responders, But may be applied to many types of wireless networks, such as an antenna, any wireless system including an active antenna and / or a radar.

8A illustrates an exemplary functional implementation of a front-hall module 270 in accordance with the present invention. The front hall module 270 presents a digital interface 263 using, for example, optical fiber media. The traffic in the front-hall interface 263 includes a multiplexed signal that includes several front-hall signals transmitted between a plurality of mobile radio transceivers and a baseband unit that are communicatively coupled together via a wide area wireless access network. An exemplary mobile radio transceiver is labeled 269. The interface processing module 271 demultiplexes and multiplexes two or more front-hall signals (e.g., the front-hall signals 266a, 267, and 268) according to a predetermined multiplexing algorithm. The front-hall signals may include front-hall information for a subset of the mobile radio transceivers to which they are directed. The front-hall signal 266a includes a front-hall signal 266a, an RF carrier signal formed from I / Q data included in the front-hall signal 266a, and a digitally modulated general- And demodulated into digitally modulated user information, and are multiplexed together into a signal 265. [ A similar process is applied 266b through 272b to generate a signal 264. The front hall signal 267 may be integrated within the front hall module 270 or transmitted to a mobile radio transceiver 269 that may be communicatively coupled to the front hall module via an interface.

The multiplexed signal 265 is supplied to the interface module 275, which can use a wired medium 276 composed of any optical fiber, optical axis cable or copper wire. The multiplexed signal 264 is provided to the interface module 274, which can use the wireless medium 277. The interface module 274 may be implemented as a wireless transceiver and antenna with appropriate capability to transmit the multiplexed signal 264 across a specific distance. The front hall signal 268 is supplied to the digital interface module 273, which can use the high capacity wired medium 278. The moving signal at this interface is composed of the relevant front-hall information to provide a front-hall signal to the mobile radio transceiver to which the front-hall signal is directed.

While the above describes one direction of signal flow, all interfaces and modules are designed to handle bi-directional signals such that each operation has a symmetrical function for handling traffic in different directions.

Figure 8b shows another exemplary front hall module constructed in accordance with the present invention. In this case, the front-hall module 290 uses the wireless interface 288 to receive data received from a baseband unit located within a Wide Area Radio Access Network (e.g., a wireless network) And transmits the data received from the mobile radio transceiver to the baseband unit. The signals at these air interfaces may include multiplexing of modulated RF carriers, digitally modulated general purpose control signals, and digitally modulated user information.

The interface module 291 processes the radio signals and demultiplexes the synthesized front-hall signals into individual front-hall signals transmitted to the front-end processing modules 292a, 292b, 292c and 292d as well as to the interface module 293, . Two types of multiplexing: (1) multiplexing of several front-hall signals towards multiple RRUs (mobile radio transceivers); And (2) multiplexing of the RF carrier with control information and user information for each individual front-hall signal as well as multiplexing (reverse operation) of the front-hall signal from the mobile radio transceiver to the baseband unit can occur . The purpose of 292a, 292b, 292c and 292d is to transform the digital front-hall signal into a multiplex of radio carrier, digitally modulated control information and digitally modulated user information resulting in digital front-hall signals 283, 284, 285 and 286 ).

In this example, the digital front-hall signal 283 is transmitted to a mobile radio transceiver 289 mounted on a digital radio front-hall interface. An example of such an interface is provided by the Common Public Radio Interface standard or CPRI, which is often referred to as Remote Radio Heads (RRH) or Remote Radio Units (RRU). Conversely, a digital front-hall signal 283 is also used to convey the uplink signal from the mobile radio transceiver 289 to the baseband unit. In this case, the digital front-hall signal may only include a front-hall signal associated with the mobile radio transceiver 289.

In this example, the digital front-hall signal 284 provides an external digital front-hall interface 282 that is used to transmit and receive front-hall information regarding the mobile radio transceiver located in that portion of the network (i. E. To the digital front-end interface unit 296. [ In this case, the digital front-hall signal 282 may include a front-hall signal for such a mobile radio transceiver. As an example, the digital front-end interface 282 may use a high-capacity optical fiber medium.

In another example, the digital front-hall signal 285 is coupled to the front end of the front portion of the network, which provides an external interface 299 used to send and receive front-hole information about the mobile radio transceiver located in that portion of the network And transmitted to the hall interface unit 295. In this case, the front-hall signal 299 includes multiplexing of an RF carrier, digitally modulated control information, and digitally modulated user information carried over the wired medium. In this case, the front-hall signal 299 may only include a front-hall signal for this mobile radio transceiver. As an example, the front-end interface 299 may use an optical fiber medium (or a wavelength of optical fiber) or an optical axis cable medium. (In this example, the digital front-hall signal 286 provides an external air interface 298 that is used to transmit and receive front-hole information about the mobile radio transceiver located in the corresponding portion of the network (i. E. In this case, the front-hall signal 298 includes multiplexing of the RF carrier, digital modulated control information, and digitally modulated user information carried over the wireless medium . In this case, the radio front-hall signal 298 may include a front-hall signal for this mobile radio transceiver. As an example, the wireless front-end interface 299 may comprise an appropriately engineered RF transceiver and antenna.

In this example, the front-hall signal 287 is the multiplexing of the RF carrier, digitally modulated control information and digitally modulated user information conveyed between the interface module 291 and the radio interface module 293. The wireless interface module 293 may include an appropriately engineered RF transceiver and antenna. In this case, the radio front-hall signal 287 and the radio front-hall signal 297 may include a front-hall signal for this mobile radio transceiver located in that portion of the network. In this case, conversion to the digital front-hall format is not necessary.

6A is a flow diagram of an exemplary method 600 for transmitting information over a wireless communication channel. According to some embodiments, the method 600 may include separating (605) the digital front-hole data flow through the transceiver unit into general purpose information and radio signal information using a digital protocol frame. According to some embodiments, separating step 605 may comprise demultiplexing general purpose information and radio signal information from the digital front-hole data.

In some instances, in the detaching step 605, information that does not belong to the digital protocol frame may be deleted to reduce the amount of unnecessary data being transmitted over the wireless network segment. This feature can reduce the latency of wireless network segments while also reserving network bandwidth for more consumption and transmission of wireless signal information and / or general purpose information.

In addition, the method 600 may include transmitting (step 615) a radio frequency carrier between the transmitter and the receiver as well as dividing (step 610) the radio signal information into radio frequency carriers. The transmission of radio signal information and / or carriers is performed using an appropriate radio access interface technology. Again, the wireless connection technology used may be optimized or enhanced for the selected transmission method or medium. In addition, step 620 may comprise transmitting universal information to a receiver on a second communication channel via a transmitter unit. In some examples, the transmitter and the receiver may be communicatively coupled to each other using a digital communication channel. In some instances, the general purpose information may be transmitted over the wireless network segment by digital modulation of general purpose information.

6B is a flow diagram of an exemplary method 625 for transmitting information. It should be noted that the method described with respect to FIG. 6A specifies separating the digital front-hole data into constituent parts to improve the transmission of the constituent parts over the wireless network segment. The method 625 of FIG. 6B considers recombining the separated portions transmitted over the wireless network segment in such a way that the digital front-hole data is regenerated.

The method 625 may include digitizing (630) general purpose information because the general purpose information is received by the receiver (or prior to receipt of the general purpose information). Likewise, the method 625 may include a step 635 of re-converting the series of carriers to radio signal information, e.g., I / Q digital data. Again, the radio signal information is a digital (or analog in some instances) signal. Further, step 635 takes account of step 640 of reconstructing the digital protocol frame used by the receiver. After reconstructing the digital protocol frame, the method may include multiplexing (645) the digital protocol frame to recover the digital front-hole data. It is noteworthy that the recovered digital front hall data may contain less data than the original digital front hall data if the unnecessary data were removed during subsequent steps of evaluating the digital protocol frame.

Although not shown, the exemplary method may also include steps such as buffering both general purpose information and radio frequency information prior to synchronization of general purpose information and wireless signal information, as well as transmitting information for synchronizing general purpose information and wireless signal information Lt; / RTI > This synchronization may depend in part on the synchronization information used. It is noteworthy that the transmission phase can be performed in different frequency bands. Additionally, in some embodiments, the transmitter may comprise a baseband unit and the receiver may comprise at least one radio frequency unit, and vice versa.

Another exemplary method may include processing general purpose information in the BBU connection module 5 before transmitting general purpose information. The term "processing" can be understood to include modification of an RF signal based on content control information included in general purpose information.

Although the above-described methods for transmitting information, as described above, have been described with respect to a base station (BS) of a mobile telephony communication system, a method for transmitting information is not limited to any suitable method known to those skilled in the art, Field.

FIG. 7 illustrates an exemplary computing system 700 that may be used to implement one embodiment of the present invention. The computing system of FIG. 7 includes one or more processors 710 and memory 720. Main memory 720 partially stores instructions and data for execution by processor 710. Main memory 720 may store executable code when system 700 is operating. 7 includes a mass storage device 730, a portable storage medium drive (s) 740, an output device 750, a user input device 760, a graphical display 770, and other peripheral devices 780 ). In addition, the system 700 may include a network storage 745.

The components shown in FIG. 7 are shown to be connected through a single bus 790. The component may be connected via one or more data transfer means. Processor unit 710 and main memory 720 may be connected via a local microprocessor bus and may be coupled to mass storage device 730, peripheral device (s) 780, portable storage device 740, May be connected via one or more input / output (I / O) buses.

A mass storage device 730, which may be embodied as a magnetic disk drive or an optical disk drive, is a non-volatile storage device for storing data and instructions for use by the processor unit 710. The mass storage device 730 may store system software for implementing embodiments of the present invention for loading system software into the main memory 720.

The portable storage device 740 operates with a portable non-volatile storage medium, such as a floppy disk, a compact disk, or a digital video disk, to input and output data and code to and from the computing system 700 of FIG. System software for implementing embodiments of the present invention may be stored on such portable media and input to computing system 700 via portable storage device 740. [

The input device 760 provides a portion of the user interface. The input device 760 may include, for example, an alphanumeric keypad, such as a keyboard for inputting alphanumeric and other information, or a pointing device, such as a mouse, trackball, stylus, or cursor direction key. In addition, the system 700 as shown in FIG. 7 includes an output device 750. Suitable input devices include speakers, printers, network interfaces and monitors.

The graphical display 770 may include a liquid crystal display (LCD) or other suitable display device. The graphic display 770 receives the text and graphics information and processes the information for output to a display device.

Peripheral 780 may include any type of computer aided device for adding additional functionality to a computing system. The peripheral device (s) 780 may include a modem or a router.

The components included in the computing system 700 of FIG. 7 are those that are typically found in computing systems that may be suitable for use with embodiments of the present invention and represent a broad category of such computer components as are well known in the art There is an intention to try. Thus, the computing system 700 of FIG. 7 may be a personal computer, a portable computing system, a telephone, a mobile computing system, a workstation, a server, a minicomputer, a mainframe computer, or any other computing system. The computer may also include other bus configurations, networked platforms, multi-processor platforms, and the like. Various operating systems can be used, including UNIX, Linux, Windows, Macintosh OS, Palm OS, and other suitable operating systems.

Some of the above-described functions may be configured with instructions stored on a storage medium (e.g., a computer-readable medium). The instructions may be retrieved and executed by the processor. Some examples of storage media are memory devices, tapes, disks, and the like. The instructions operate when executed by the processor such that the processor is instructed to operate in accordance with the invention. The instructions, processor (s), and storage medium are well known to those skilled in the art.

It is noted that any hardware platform suitable for performing the processing described herein is suitable for use in the present invention. The terms "computer-readable storage medium" and "computer-readable storage medium" as used herein refer to any medium or medium that participates in providing instructions to the CPU for execution. Such media can take many forms including, but not limited to, non-volatile media, volatile media, and transmission media. For example, a non-volatile medium includes an optical disk or magnetic disk, such as a fixed disk. Volatile media include dynamic memory, such as, for example, system RAM. The transmission medium includes coaxial cables, copper wires and optical fibers among others, including wired, including one embodiment of the bus. The transmission medium may also take the form of acoustic or light waves, such as those generated during radio frequency (RF) and infrared (IR) data communications. Common forms of computer-readable media include, for example, a floppy disk, a flexible disk, a hard disk, a magnetic tape, any other magnetic medium, a CD-ROM disk, a digital video disk (DVD), any other optical medium, ROM, a PROM, an EPROM, an EEPROM, a FLASHEPROM, any other memory chip or data exchange adapter, a carrier wave, or any other computer readable medium.

Various forms of computer-readable media can be associated with delivering one or more sequences of one or more instructions to a CPU for execution. The bus retrieves the instruction from the CPU and transfers the data to the system RAM. The instructions received by the system RAM may be selectively stored on the fixed disk either before or after execution by the CPU.

The computer program code for performing operations on aspects of the present invention may be stored in a computer-readable storage medium, such as an object-oriented programming language such as Java, Smalltalk, C ++, etc., and a conventional procedural programming language such as a & Or in any combination of one or more programming languages. The program code may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, and partly on the remote computer or entirely on the remote computer or server. In the latter case, the remote computer may be communicatively coupled to the user's computer via any type of network including a local area network (LAN) or a wide area network (WAN), or a connection may be established (Via the Internet).

The equivalents of the structures, materials, acts and all means or steps and functional components in the claims below are to be construed as encompassing any structure, material, or act for performing a function with other claimed components as expressly claimed . The detailed description of the invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the invention. The exemplary embodiments are chosen and described in order to best explain the principles of the invention and its practical application and to enable those skilled in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated .

Aspects of the present invention are described above with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products in accordance with embodiments of the present invention. It will be appreciated that each block and flow diagram of the flowchart and / or block diagram and / or combinations of blocks within the block diagram may be implemented with computer program instructions. Such computer program instructions may be stored on a general-purpose computer, a special-purpose computer, a computer-readable recording medium, a computer-readable recording medium, a computer-readable recording medium, a computer- Or may be provided to a processor of another programmable data processing apparatus that generates the machine.

In addition, such computer program instructions may be stored on a computer-readable medium, such as a computer, other programmable data processing device, or any combination thereof, to produce an article of manufacture comprising instructions that implement the functions / acts specified in the flowchart and / Or any other device capable of causing a device to perform its functions in a particular manner.

The computer program instructions may also be stored in a computer, other programmable data processing apparatus, or a combination thereof, such that instructions executing on the computer or other programmable apparatus provide a process for implementing the functions / acts specified in the flowchart and / May be loaded into another device such that a series of operational steps may be performed on a computer, other programmable device, or other device to produce a computer implemented process.

Flowcharts and block diagrams in the figures illustrate the structure, functionality, and operation of possible implementations of systems, methods, and computer program products in accordance with various embodiments of the present invention. In contrast, each block of the flowchart or block diagram may represent a portion of a module, segment, or code that includes one or more executable instructions for implementing the specified logical function (s). It should also be noted that, in some alternative embodiments, the functions described in the blocks may occur out of the order described in the figures. For example, two blocks shown one after the other may actually be executed substantially concurrently, or the blocks may sometimes be executed in reverse order according to the included function. It should also be understood that each block and block diagram of the block diagrams and / or flowcharts and / or combinations of blocks in the flowchart illustrate alternative embodiments of the invention by a special purpose hardware-based system or a combination of special purpose hardware and computer instructions, It should be noted that the present invention can be implemented.

While various embodiments have been described above, it should be understood that they have been presented by way of example only, and not limitation. This detailed description is not intended to limit the scope of the invention in the specific forms set forth herein. Accordingly, the breadth and scope of preferred embodiments should not be limited by any of the above-described exemplary embodiments. It is to be understood that the above description is illustrative and not restrictive. On the contrary, the detailed description is intended to cover alternatives, modifications and equivalents as may be included within the spirit and scope of the present invention as defined by the appended claims or as understood by those skilled in the art. Accordingly, the scope of the present invention should not be determined with reference to the above description, but instead should be determined with reference to the appended claims and their full scope of equivalents.

Claims (23)

Separating (51, 605) the digital front-hall data into general-purpose information and radio signal information through the transmitters (2, 5);
Transmitting (620) universal information over a wireless network segment from a transmitter to a receiver (3a, 6a, 3b, 6b) in a first communication channel (75); And
(615) wireless signal information (71, 72, 73, 74) over a wireless network segment from a transmitter to a receiver in a second communication channel. The method according to claim 1,
The step of separating comprises converting (53, 610) the radio signal information into a plurality of radio frequency carrier signals; And digitally modulating general purpose information over the wireless network segment. 3. The method of claim 2,
The wireless signal information may be generated using any filtering, digital upconverting, in-phase and in-quadrature mixing, mixing, digital-to-analog conversion, A method for efficiently transmitting information over a wireless network segment that is transformed into a plurality of radio frequency carrier signals. The method according to claim 1,
Further comprising processing wireless signaling information using at least one wireless connection technology protocol used in the wireless network. The method according to claim 1,
Further comprising storing in the buffer at least a portion of the radio signal information prior to transmitting the radio signal information over the wireless network segment from the transmitter to the receiver in the second communication channel, How to. The method according to claim 1,
Further comprising storing in the buffer at least a portion of the general purpose information prior to transmitting the general purpose information over the wireless network segment from the transmitter to the receiver in the first communication channel. . The method according to claim 1,
The separating step comprises:
Demultiplexing a digital protocol frame of digital front-hall data;
Determining a word associated with the general purpose information and a word associated with the wireless signal information; And
And separating the universal information from the radio signal information based on the determining step. 8. The method of claim 7,
Further comprising converting the word associated with the wireless signal information into a radio frequency carrier signal. 9. The method of claim 8,
And regenerating a word associated with the radio signal information from the radio frequency carrier signal. 10. The method of claim 9,
The word is a method for efficiently transmitting information over a wireless network segment, which is regenerated using arbitrary filtering, digital down-converting, in-phase and quadrature mixing, mixing, digital-to-analog conversion and combinations thereof . 9. The method of claim 8,
Further comprising multiplexing a word associated with radio signal information and a word associated with general purpose information to recover a digital protocol frame. 12. The method of claim 11,
Further comprising multiplexing the digital protocol frame to reproduce the digital front-hall data. 8. The method of claim 7,
Further comprising removing unnecessary data from the digital protocol frame. ≪ Desc / Clms Page number 19 > The method according to claim 1,
And transmitting synchronization information between the transmitter and the receiver. ≪ Desc / Clms Page number 19 > 15. The method of claim 14,
Further comprising using synchronization information to reassemble wireless signal information and general purpose information into digital front hall data. The method according to claim 1,
Further comprising processing universal information prior to transmitting the universal information. ≪ Desc / Clms Page number 19 > A system comprising a baseband unit (BBU) (2) communicatively coupled to a radio frequency unit (RFU) (3a, 3b)
At least one of the BBU and RFU separates the digital front-hall data into general purpose information and radio signal information, transmits general purpose information over a wireless network segment in a first communication channel, and transmits general information via a wireless network segment in a second communication channel, A system configured to transmit information. 18. The method of claim 17,
Wherein the baseband unit comprises a demultiplexer for demultiplexing the radio signal information into a carrier image. 18. The method of claim 17,
Wherein the radio frequency unit comprises a multiplexer for multiplexing the radio signal information with the carrier image. 20. The method of claim 19,
Further comprising a radio frequency unit connection module communicatively coupled to a radio frequency unit that adjusts the carrier image based on the associated radio access technology protocol. 18. The method of claim 17,
Wherein the baseband unit transmits wireless signaling information over a wireless network segment to a second radio frequency unit over a second communication channel. 20. The method of claim 19,
Wherein the RFU is controlled using the control information received by the RFU connection unit. Separating the digital front-hall data into general-purpose information and radio signal information through a transmitter;
Converting the radio signal information into a plurality of radio frequency carrier signals; And
And digitally modulating general-purpose information over the wireless network segment.

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